/* AI Study Coach + Kaiwa */
.coach-hero,.kaiwa-hero{display:flex;justify-content:space-between;gap:18px;align-items:center;border:1px solid var(--border,#e5e7eb);border-radius:24px;padding:24px;background:linear-gradient(135deg,rgba(224,69,90,.08),rgba(100,100,255,.07));margin-bottom:16px}.coach-kicker{font-size:12px;font-weight:900;letter-spacing:.08em;color:var(--primary)}.coach-hero h3,.kaiwa-hero h3{margin:7px 0;font-size:24px}.coach-hero p,.kaiwa-hero p{margin:0;max-width:680px;color:var(--muted,#6b7280)}.coach-orb,.kaiwa-emoji{width:68px;height:68px;display:grid;place-items:center;border-radius:20px;background:var(--card,#fff);font-size:32px;box-shadow:0 8px 25px rgba(0,0,0,.08);flex:0 0 auto}.coach-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}.coach-stats>div{padding:17px;border:1px solid var(--border,#e5e7eb);border-radius:18px;background:var(--card,#fff)}.coach-stats small{display:block;color:var(--muted,#6b7280)}.coach-stats strong{display:block;font-size:25px;margin-top:4px}.coach-plan{border:1px solid var(--border,#e5e7eb);border-radius:22px;padding:18px;background:var(--card,#fff)}.coach-plan-head{display:flex;justify-content:space-between;margin-bottom:13px}.coach-plan-head b{font-size:12px;color:var(--muted,#6b7280)}.coach-tasks{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.coach-tasks button{border:1px solid var(--border,#e5e7eb);background:transparent;border-radius:14px;padding:14px 10px;text-align:left;cursor:pointer;color:inherit}.coach-tasks button:hover{border-color:var(--primary)}.coach-focus{margin-top:16px;padding:14px;border-radius:15px;background:rgba(127,127,127,.08)}.coach-focus>div{display:flex;gap:7px;flex-wrap:wrap;margin-top:9px}.coach-chip{padding:5px 10px;border-radius:999px;background:rgba(224,69,90,.12);font-family:'Noto Sans JP',sans-serif;font-weight:800}.coach-muted,.coach-tip{color:var(--muted,#6b7280)}.coach-tip{margin-top:12px;padding:12px 2px}.kaiwa-start{border:1px solid var(--border,#e5e7eb);border-radius:24px;padding:22px;background:var(--card,#fff)}.kaiwa-controls{display:grid;grid-template-columns:1fr 160px;gap:12px;margin:18px 0}.kaiwa-controls label{font-weight:700;font-size:13px}.kaiwa-controls select{display:block;width:100%;margin-top:7px;padding:12px;border:1px solid var(--border,#e5e7eb);border-radius:12px;background:var(--card,#fff);color:inherit}.kaiwa-start-btn{width:100%;margin-top:4px}.kaiwa-note{font-size:12px;color:var(--muted,#6b7280);text-align:center}.kaiwa-app{border:1px solid var(--border,#e5e7eb);border-radius:24px;background:var(--card,#fff);overflow:hidden}.kaiwa-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 15px;border-bottom:1px solid var(--border,#e5e7eb)}.kaiwa-toolbar span{font-size:12px;color:var(--muted,#6b7280)}.kaiwa-messages{min-height:360px;max-height:55vh;overflow:auto;padding:18px}.kaiwa-msg{display:flex;flex-direction:column;margin:9px 0;max-width:82%}.kaiwa-msg.user{margin-left:auto;align-items:flex-end}.kaiwa-msg.feedback{max-width:100%;align-items:center}.kaiwa-bubble{padding:12px 15px;border-radius:17px;background:rgba(127,127,127,.1);line-height:1.55;font-family:'Noto Sans JP',sans-serif}.kaiwa-msg.user .kaiwa-bubble{background:var(--primary);color:#fff}.kaiwa-msg.feedback .kaiwa-bubble{font-family:inherit;font-size:13px;background:rgba(224,69,90,.08)}.kaiwa-input-row{display:grid;grid-template-columns:48px 1fr auto;gap:8px;padding:12px;border-top:1px solid var(--border,#e5e7eb)}.kaiwa-input-row textarea{resize:none;border:1px solid var(--border,#e5e7eb);border-radius:13px;padding:11px;background:transparent;color:inherit;font-family:'Noto Sans JP',sans-serif}.kaiwa-mic{border:1px solid var(--border,#e5e7eb);border-radius:13px;background:transparent;cursor:pointer;font-size:20px}.kaiwa-mic.active{outline:3px solid rgba(224,69,90,.2);background:rgba(224,69,90,.1)}.kaiwa-actions{display:flex;gap:8px;padding:0 12px 12px}.kaiwa-actions .btn{font-size:12px}
@media(max-width:700px){.coach-hero,.kaiwa-hero{padding:18px}.coach-orb{display:none}.coach-hero h3,.kaiwa-hero h3{font-size:20px}.coach-stats{gap:7px}.coach-stats>div{padding:12px}.coach-stats strong{font-size:20px}.coach-tasks{grid-template-columns:repeat(2,1fr)}.kaiwa-controls{grid-template-columns:1fr}.kaiwa-input-row{grid-template-columns:44px 1fr}.kaiwa-input-row .btn{grid-column:1/-1}.kaiwa-messages{min-height:300px}.kaiwa-msg{max-width:90%}}

.kaiwa-mode-tabs{display:flex;gap:8px;margin:16px 0 10px}.kaiwa-mode-tabs .btn{flex:1}.kaiwa-challenge-banner{margin:10px 14px 0;padding:12px 14px;border-radius:14px;background:rgba(100,100,255,.08);font-size:13px}.kaiwa-mode-tabs+.kaiwa-start-btn{margin-top:4px}